Summer Fruit Tortrix
(Adoxophyes orana)
Seasonally occurring in Europe, bivoltine pest. It can cause significant damages in years of cooler summer.
Food plant:
Polyphagous pest, primarily apple, pear, apricot and peach
Detriment:
Caterpillars wintering in crack of the barks chew the inside of the burgeons at burgeoning. Later, similar to other leafroller moths, weaved and chewed leaves and flowers indicate their presence. Caterpillars chew the weaved leaves and particularly the surface of the ripening fruits in summer.
Lifestyle:
Depending on the year and weather the swarming of the first generation starts in the second half of May and peaks at the end of May / beginning of June. The swarming of the second generation is expected from the second half of July, peaks at end of the month and the beginning of August, and it can last until September. The moths place their glittering eggs on to the fruits and to the nearby leaves.
Recommended protection:
Hatching of the first caterpillars is expected usually after two weeks from the start of swarming, whereas their mass hatching takes place usually 7-14 days of peak swarming. Chemical protection is the most effective before burgeoning, at the time of peak swarming and mass hatching.
Pheromone trap placement:
The placement is due in the beginning of May. Replace the dispenser and the sticky board between two swarmings, around the beginning of July.
Check the traps twice a week. Count the number of moths captured in the particular period and note the number. The swarming dynamics are visible from the data and the time of intervention is definable. Should the trap capture too few moths, even at peak swarming time, it refers to low infection. In this case the moths can be captured by placing some further traps in smaller areas and the population can be controlled without spraying, so that we can preserve our environment.
Empirical swarming curve of the almailonca in Central-Europe:
The introduced empirical swarming curve was prepared by using data of many years, however the swarming may be different depending on the weather and the microclimate of the arable land, therefore the thorough observation of swarming is also important.